I wonder how a ganja impaired driver would fare in a standard field sobriety (tough finger to nose, walk the line) test.

Im getting more weed impaired driving lately from traffic stops running radar. More people are tending to speed wheras you'd think they would be driving 5 mph. lol

Ive had a few lately running LIDAR and driver was doing 65-70 mph on city street 35 mph zone. Mind is altered and they swear they were doing the speed limit. Also, some of the FST's for weed fall under DAR or drug abuse recognition tests, so they are a little different then the three standard alcohol related tests.
Id also say Ive seen probably about 50% of my weed impaired DUI arrests were combo with consuming alcohol as well.

""This is my shield. I bear it before me into battle, but it is not mine alone. It protects my city. I will never let my brother out of its shadow nor my city out of its shelter. I will die with my shield before me... facing the enemy." Author Unknown "

""This is my shield. I bear it before me into battle, but it is not mine alone. It protects my city. I will never let my brother out of its shadow nor my city out of its shelter. I will die with my shield before me... facing the enemy." Author Unknown "

As for motor-vehicle use, pot contrasts with alky thusly: A drunk will run a stop sign. But a pot smoker will sit there waiting for it to turn green.

I would say a drunk will not even notice the stop sign. A pot smoker would see it, go through it and laugh about missing the stop sign (probably still looking back at the stop sign they went through) while feeling amused at how high they are.

Whammy thinks its getting out of hand on the roadways.
People really think they cant be busted for a DUI and smoke it up on the freeways.
Bad for us splitters who get a huge waft of it while splitting.